Use of higher percentage of lime for bonding silica bricks, reduces their__________________?

Related Mcqs:

Porosity is induced in insulating refractories by adding________________?

A. Powdered naphthalene B. Ammonium chloride/sulphate C. Calcium phosphate D. All A., B. and C....

Which of the following is not a neutral refractory ?

A. Silicon carbide B. Magnesite C. Chromite D. Graphite...

Pick out the wrong statement?

A. Fluxing material like lime is added in clay to reduce the vitrification temperature B. Main constituents of clay are alumina and silica C. Addition of sand in ceramic materials makes it non-plastic, increases its fusion point and reduces its shrinkage on burning D. Vitrification of fireclay material is done to increase its porosity...

Walls, roofs & combustion chambers of annealing furnaces are made of ______________ bricks?

A. High duty fireclay B. Silica C. Mullite D. Carborundum...

Which is an acidic refractory ?

A. Magnesite B. Dolomite C. Fireclay D. Chrome magnesite...